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| Substrate material: BK7 |
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Wedge:  3 arc min. |
S1 Surface Figure:  /10 @ 633nm |
Clear Aperture: > 85% of diameter |
| S1 Surface Quality: 10-5 laser quality |
Chamfer: 0.3mm at 45 typical |
| S2 Surface Quality: Commercial Polish |
Damage Threshold: 10J/ , 10ns pulse |
| Diameter Tolerance: ± 0.0/-0.20mm |
Adhesion and Durability: Per MIL-C-675A |
| Thickness Tolerance: ± 0.25 mm |
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